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An Efficient Hybrid Filter-Based Phase-Locked Loop under Adverse Grid Conditions

Author

Listed:
  • Nanmu Hui

    (School of Information Science & Engineering, Northeastern University, Shenyang 110819, Liaoning, China)

  • Dazhi Wang

    (School of Information Science & Engineering, Northeastern University, Shenyang 110819, Liaoning, China)

  • Yunlu Li

    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, China)

Abstract

Synchronous-reference-frame phase-locked loop (SRF-PLL) is widely used in grid synchronization applications. However, under unbalanced, distorted and DC offset mixed grid conditions, its performance tends to worsen. In order to improve the filtering capability of SRF-PLL, a modified three-order generalized integrator (MTOGI) with DC offset rejection capability based on conventional three order generalized integrator (TOGI) and an enhanced delayed signal cancellation (EDSC) are proposed, then dual modified TOGI (DMTOGI) filtering stage is designed and incorporated into the SRF-PLL control loop with EDSC to form a new hybrid filter-based PLL. The proposed PLL can reject the fundamental frequency negative sequence (FFNS) component, DC offset component, and the rest of harmonic components in SRF-PLL input three-phase voltages at the same time with a simple complexity. The proposed PLL in this paper has a faster transient response due to the EDSC reducing the number of DSC operators. A small-signal model of the proposed PLL is derived. The stability is analyzed and parameter design guidelines are given. Experimental results are included to validate the effectiveness and robustness of the proposed PLL.

Suggested Citation

  • Nanmu Hui & Dazhi Wang & Yunlu Li, 2018. "An Efficient Hybrid Filter-Based Phase-Locked Loop under Adverse Grid Conditions," Energies, MDPI, vol. 11(4), pages 1-18, March.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:703-:d:137307
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    References listed on IDEAS

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    1. Wei Luo & Jianguo Jiang & He Liu, 2017. "Frequency-Adaptive Modified Comb-Filter-Based Phase-Locked Loop for a Doubly-Fed Adjustable-Speed Pumped-Storage Hydropower Plant under Distorted Grid Conditions," Energies, MDPI, vol. 10(6), pages 1-13, May.
    2. Mostafa Ahmadzadeh & Saeedollah Mortazavi & Mohsen Saniei, 2018. "Applying the Taguchi Method for Investigating the Phase-Locked Loop Dynamics Affected by Hybrid Storage System Parameters," Energies, MDPI, vol. 11(1), pages 1-20, January.
    3. Yijia Cao & Jiaqi Yu & Yong Xu & Yong Li & Jingrong Yu, 2017. "An Efficient Phase-Locked Loop for Distorted Three-Phase Systems," Energies, MDPI, vol. 10(3), pages 1-16, February.
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    Cited by:

    1. Gianfranco Chicco & Andrea Mazza, 2019. "100 Years of Symmetrical Components," Energies, MDPI, vol. 12(3), pages 1-20, January.
    2. Tie Li & Yunlu Li & Junyou Yang & Weichun Ge & Bo Hu, 2019. "A Modified DSC-Based Grid Synchronization Method for a High Renewable Penetrated Power System Under Distorted Voltage Conditions," Energies, MDPI, vol. 12(21), pages 1-19, October.
    3. Yuxia Jiang & Yonggang Li & Yanjun Tian & Luo Wang, 2018. "Phase-Locked Loop Research of Grid-Connected Inverter Based on Impedance Analysis," Energies, MDPI, vol. 11(11), pages 1-21, November.
    4. Yunlu Li & Junyou Yang & Haixin Wang & Weichun Ge & Yiming Ma, 2018. "A Hybrid Filtering Technique-Based PLL Targeting Fast and Robust Tracking Performance under Distorted Grid Conditions," Energies, MDPI, vol. 11(4), pages 1-18, April.

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